NumberUtilities.java

- 
-
 
 public class NumberUtilities {
-    
-    public static String getRange(int start) {
-        return null;
+    public static String getRange(int stop) {
+        String start = "";
+        for(int i=0;i<stop;i++){
+            start = start+i;
+        }    return start;
     }
-    
+
     public static String getRange(int start, int stop) {
-        return null;
+        String range = "";
+        for(int i=start;i<stop;i++){
+            range +=i; 
+        }
+        return range;
     }
 
-
     public static String getRange(int start, int stop, int step) {
-        return null;
+        StringBuilder getRange = new StringBuilder();
+        for(int i=start;i<stop;i+=step){
+            getRange.append(i);}
+        return ""+ getRange;
     }
-    
+
     public static String getEvenNumbers(int start, int stop) {
-        return null;
-    }
+        StringBuilder even = new StringBuilder();
+        for(int i=start;i<stop;i++){
+            if(i%2==0){
+                even.append(i);
+            }
+        }return ""+even;
 
+    }
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        StringBuilder odd = new StringBuilder();
+        for(int i=start;i<stop;i++){
+            if(i%2==1){
+                odd.append(i);
+            }
+        }return ""+odd;
     }
 
-
     public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
+        StringBuilder exp = new StringBuilder();
+        for(int i=start;i<=stop;i++){
+           int powerto = (int)Math.pow(i, exponent);
+            exp.append(powerto);
+        }
+        
+        return ""+exp;
     }
 }

TableUtilities.java

 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        return getMultiplicationTable(5);
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        return getMultiplicationTable(10);
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder table = new StringBuilder();
+        for(int i=1;i<=tableSize;i++){
+            for(int t=1;t<=tableSize;t++){
+             table.append(String.format("%3d |",i*t));
+              }table.append("\n");}
+             
+        
+        return ""+table;
+        //;
     }
 }

TriangleUtilities.java

- 
 
 public class TriangleUtilities {
-
     public static String getRow(int numberOfStars) {
-        return null;
+        StringBuilder rows = new StringBuilder();
+        for(int i=1;i<=numberOfStars;i++){
+
+            rows.append("*");
+        }
+        return rows.toString();
     }
-    
+
     public static String getTriangle(int numberOfRows) {
-        return null;
-    }
+        StringBuilder rows = new StringBuilder();
+        for(int i=1;i<=numberOfRows;i++){
+            String triangle=getRow(i);
+            rows.append(triangle + "\n");
 
+        }
+        return rows.toString();
+    }
 
     public static String getSmallTriangle() {
-        return null;
+        return getTriangle(4);
     }
 
     public static String getLargeTriangle() {
-        return null;
+        return getTriangle(9);
     }
 }

package.bluej

 #BlueJ package file
-dependency1.from=NumberUtilitiesTest
-dependency1.to=NumberUtilities
+dependency1.from=TableUtilitiesTest
+dependency1.to=TableUtilities
 dependency1.type=UsesDependency
 dependency2.from=TriangleUtilitiesTest
 dependency2.to=TriangleUtilities
 dependency2.type=UsesDependency
-dependency3.from=TableUtilitiesTest
-dependency3.to=TableUtilities
+dependency3.from=NumberUtilitiesTest
+dependency3.to=NumberUtilities
 dependency3.type=UsesDependency
-editor.fx.0.height=722
-editor.fx.0.width=800
-editor.fx.0.x=537
-editor.fx.0.y=28
+editor.fx.0.height=777
+editor.fx.0.width=1079
+editor.fx.0.x=0
+editor.fx.0.y=23
 objectbench.height=164
 objectbench.width=484
 package.divider.horizontal=0.6
-package.divider.vertical=0.7560627674750356
-package.editor.height=523
+package.divider.vertical=0.7436281859070465
+package.editor.height=489
 package.editor.width=382
-package.editor.x=20
-package.editor.y=57
-package.frame.height=759
+package.editor.x=573
+package.editor.y=23
+package.frame.height=725
 package.frame.width=508
 package.numDependencies=3
 package.numTargets=6